Prouvost won the 2013 Turner Prize winner for an installation named Wantee made in response to the artist Kurt Schwitters. In a tea party setting a film describes a fictional relationship between Prouvost's grandfather and Schwitters.[9] The work is named in reference to the habit of Schwitters' partner of asking guests if they "want tea".[10] The panel described the work as "outstanding for its complex and courageous combination of images and objects in a deeply atmospheric environment".[11] Prouvost was generally considered a surprise winner.[2]